I have all my codebases the same, I checked all previous postings and everything is correct as far as I can see. Here is the applet line in display_cart.html
applet code="uShopJSI.class" codebase="../classes/" name="uShopJSI" width="2" height="2"
My site starts at http://www.collectorsgalleryvegas.com/test.html
I took a look at your site and noticed in the Java Console that you are getting the following error message:
"uShop Message: Error reading template_cart.html"
This message indicates that the template for that shopping cart page ("template_cart.html") could not be read from your "classes" directory.
Furthermore, I see that going to the URL of that file in your classes directory:
...results in a "File Not Found" message.
So it looks like the problem is just that the "template_cart.html" file is not located in your "classes" directory.